(Thallus Structure, Reproduction, Post Fertilization Changes and Life Cycle)
Polysiphonia- Systematic Position
Distribution of Polysiphonia
Ø Polysiphonia is marine red algae belongs to the class Rhodophyceae.
Ø They are abundantly present in the Atlantic Coasts of America.
Ø Polysiphonia platycarpa is present in the Indian coastal regions.
Ø Polysiphonia violacea is an epiphytic alga grown on some brown algae such as Fucus vesiculosus.
Ø Some species of Polysiphonia are parasitic (example: Polysiphonia fastigiata).
Thallus Structure of Polysiphonia
Ø As the name suggests, the thallus of Polysiphonia is siphonous with many interconnected filaments (siphons).